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<?php $f = new SplFileObject('php://memory', 'r+'); assert('$f instanceof Iterator'); $f->fwrite("line 1"); $f->rewind(); assert('$f->valid() === true'); assert('$f->eof() === false'); assert('$f->current() === "line 1"'); assert('$f->valid() === true'); // fails assert('$f->eof() === true');
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Deprecated: assert(): Calling assert() with a string argument is deprecated in /in/P9Y9A on line 4 Deprecated: assert(): Calling assert() with a string argument is deprecated in /in/P9Y9A on line 7 Deprecated: assert(): Calling assert() with a string argument is deprecated in /in/P9Y9A on line 8 Deprecated: assert(): Calling assert() with a string argument is deprecated in /in/P9Y9A on line 9 Deprecated: assert(): Calling assert() with a string argument is deprecated in /in/P9Y9A on line 10 Warning: assert(): Assertion "$f->valid() === true" failed in /in/P9Y9A on line 10 Deprecated: assert(): Calling assert() with a string argument is deprecated in /in/P9Y9A on line 11
Output for 5.1.4 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.3.32 - 7.3.33
Warning: assert(): Assertion "$f->valid() === true" failed in /in/P9Y9A on line 10
Output for 5.1.0 - 5.1.3
Fatal error: Uncaught exception 'RuntimeException' with message 'SplFileObject::__construct(php://memory): failed to open stream: Inappropriate ioctl for device' in /in/P9Y9A:3 Stack trace: #0 /in/P9Y9A(3): SplFileObject->__construct('php://memory', 'r+') #1 {main} thrown in /in/P9Y9A on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Class 'SplFileObject' not found in /in/P9Y9A on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: splfileobject in /in/P9Y9A on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: splfileobject in /in/P9Y9A on line 3

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